package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.utils.CacheClient;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.concurrent.TimeUnit;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private CacheClient cacheClient;

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        log.info("根据分类id查询菜品: {}", categoryId);

        try {
            String key = "dish:" + categoryId;

            // 使用缓存查询
            List<DishVO> list = cacheClient.queryWithPassThrough(
                    key,
                    List.class,
                    (k) -> {
                        // 数据库查询回退
                        Dish dish = Dish.builder()
                                .categoryId(categoryId)
                                .status(StatusConstant.ENABLE)
                                .build();
                        return dishService.listWithFlavor(dish);
                    },
                    30L,
                    TimeUnit.MINUTES
            );

            return Result.success(list);
        } catch (Exception e) {
            log.error("查询菜品列表失败, categoryId: {}", categoryId, e);
            // 降级处理：直接查询数据库
            Dish dish = Dish.builder()
                    .categoryId(categoryId)
                    .status(StatusConstant.ENABLE)
                    .build();
            List<DishVO> list = dishService.listWithFlavor(dish);
            return Result.success(list);
        }
    }
}